Connecting means for oil guns



Aug. 24 1926. 1,597,201

P. J. JORGENSEN ET AL CONNECTING MEANS FOR OIL GUNS Filed Nov. 20, 1922 Patented Aug. 24, 1925.

UNITED STATES PATENT OFFICE.

PETER J. JORGENSEN AND CLARENCE H. J'OBGENSEN, OF CHICAGO, ILLINOIS.

CONNECTING MEANS FOR OIL GUNS.

Application filed November 20, 1822. Serial No. 602,243.

Our invention relates to connecting means for oil guns and has particular reference to a device adapted to be connected to an oil cup having a hollow charging stem projecting therefrom through which oil is passed into the cup by having pressure applied thereto from an oil gun and is particularly adapted for supplying lubricant to oil cups of bearings for automobiles although it is also adapted for many industrial purposes.

The primary object of our invention is the provision of means whereby the discharge pipe leading from an oil gun can be easily and simply connected to an oil cup with a minimum amount of eifort and time and which forms a tight connection so that oil will not leak from the oil gun or the oil cup during the filling operation.

Another and further object of our invention is the provision of oil filling means whereby an oil gun canbe easily connected to an oil cup without loss of oil on the cup and making the operation simple and clean as possible and yet effective in results.

Another and further object of our invention is the provision of an oil gun connection means which is easily turned or swivelled about the filling stem of an oil cup when attached thereto without the addition of a joint for this purpose, and which can also be applied to such stem from any posi-' tion desirable, and the gun can be turned freely; or twisted in any direction when attached to the oil cup.

These and other objectsof our invention will be more fully and better understood by reference to the accompanying drawing in which Figure 1 is a vertical sectional view of our improved connecting means secured to an oil cup;

Figure 2 is a cross-sectional view on line 2-2 of Figure 1;

. Figure 3 is a vertical view partially in elevation and partially in section showing the device removed from an oil cup Figure 4 is a vertical side elevational view of our improved device;

Figure 5 is a cross-sectional viewof the shell used to control the fastening and clamping jaws of the device;

Figure-6 is a side elevational view of the gripping jaws;

' Figure 7 is a plan view of the lower end of the device as shown in Figure'3;

Figure 8 is a cross-sectional view on lines 8-8 of Figure 1; and

Figure 9 is a vertical view in elevation of an oil cup to which the device is adapted to be connected.

Referring now specifically to the draw ings and in which like reference characters refer to like parts throughout, an oil cup 10 is shown. having a hollow charging stem 11 projecting therefrom to which the discharge pipe 11 of an oil gun is adapted to be connected. "A cylindrical member 12 is provided screw-threaded to the discharge pipe 11 of the oil gun, and having a chamber 13 in the upper part thereof and is restricted at a point 14 intermediate its ends with a conduit 16 extending therethrough into an enlarged chamber 15 in the lower portion thereof within which is seated an expansion spring 16 for controlling the valve as hereinafter described. The conduit 15 leads from the chamber 13 and has a member 17 positioned therein with a head 18 thereon which acts as a valve and seats upon a shoulder 19 at the bottom of the chamber 13 and the entrance of the conduit 15. In the cham ber 16 at the lower end is placed a washer 20 of substantially the same diameter as the chamber 15 having an opening 21 therethrough and in contact with a second washer 22 upon which the spring 16 is seated, the opposite end of the spring 16 being seated at the upper part of the chamber 15. The washer 21 has an upwardly projecting portion 23 integral therewith to which the member 17 is connected, the portion 23 having holes in the sides thereof through which the oil passes.

Outside of the member 12 and positioned thereagainst is a air of gripping jaws 24 and 25, semi-circu ar in form and having a spring 26 therearound which is adapted to hold the jaws in position in sliding engagement upon the member 12. At the upper end of the member 24 is a shoulder portion 27 which extends outwardly from the member 24, a similar shoulder 28 being provided on the member 25, a pair of annular shoulders 29 and 30 being provided near the lower end of each of the members 24 and 25 respectively and against which a shell 31 abuts at its lower end, the said shell being positioned around the gripping jaws 24 and 25 and is held in position by the shoulders 27 and 28 at the upper ends of the gripping members 24 and 25 and by the shoulders 29 and 30 at the lower ends. The member 12 Y has an annular recess 32 in its outer portion,

an upper shoulder 33 being formed and a lower shoulder 34, the member 24 and having projections 35 and 36 thereon respectively on their inner sides which are adapted to engage against the shoulders 33 and 34 as posite sides of the shell 31.

A pin 42 is inserted through the member 12 which passes across the chamber 13 and projects outwardly between the gripping jaws 24 and 25 and into the slots 40 and 41-.

in the shell 31 so that as the shell 31 is turned there is a relatively longitudinal movement between the member 12 and the gripping jaws 24 and 25 and the shell 31 as the aws are clamped down about the stem of the oil cup. The inner contour of the shell 31 at its upper end is circular and therefore concentric with the gripping jaws 24 and 25 and at its lower end elliptical and therefore is eccentric with said gripping jaws as shown in Figures 4 and 5, and also in Figure 3 where the jaws are shown spaced apart a slight distance from the gripping jaws 24 and 25 so that as the shell 31 is rotated the pin 42 by engagement with the sides of the slots 40 and 41 draws the member 12 downward into position shown in Figure 1 and at the same time the shell 31 forces the jaws inwardly so that the hollow filling stem of the oil cup is gripped tightly and a tight joint provided between the ends of the filling stem and the connecting means. The spring 26 allows the jaws to expand when the device is bein applied to a filling conduit 11 and as the lling conduit enters the gripping jaws it comes in contact with the washer 20. The valve head 18 is lifted from its seat so that oil passes out of the pipe 11 downward into the chamber 13 through the conduit 15 and the holes in the side of the washer 22' into the oil cup, the

necessary pressurev being applied by the plunger of theoil gun as is common practice. 14s soon as the oil 'cup is filled, and it is desired to remove the connection from the cup, the shell 31 is turned so as to release the aws from the stem which'has the effect of 'forcing the member 11 upward between the 'grlpping jaws and the removal of the device from the stem, the valve in the meantime being closed so that any escape of oil is pre-" vented except a very small amount in the chamber 16 so that the filling operation is extremely simple and easily accomplished.

It will be noted that there is a relative movement between the shell and the gripping jaws and when the gripping jaws are placed in position upon the projecting stem of an oil cup the upper end of the said stem is forced into close contact with the leather washer preventing leakage from the oil pump during the filling operation of the oil cup, this connection, of course, being tight because of the pressure which is exerted upon the contents of the oil gun. The gripping jaws it will also be noticed are so formed that they will easily turn upon the charging stem of the oil cup with a swivel action so that they can be filled from any position or the charging member twisted around the charging stem of the oil cup for any purpose desired.

While we have described more or less precisely the details of construction, we do not wish to be understood as limiting ourselves thereto, as we contemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of our invention.

We claim:

1. Connecting means for oil guns comprising in combination a cylindrical member having a restricted portion intermediate its ends with a conduit therethrough, a valve, a pair of gripping jaws associated with said cylindrical member, a rotatable shell mounted upon said cylindrical member and around said gripping jaws, the said shell being round at one of its ends and elliptical at the other, and a member to which said valve is connected mounted in one end, of said cylindrical member and having a discharge opening therethrough whereby the said valve is opened when the cylindrical member is placed upon the charging stem of an oil cup.

2. Gripping means for grease gun comprising in combination a cylindrical member having a restricted portion intermediate its ends with a conduit therethrough, a valve and operating member for said valve mounted in theend of said cylindrical member, a spring adapted to hold said valve in normally closed position, a air of gripping jaws mounted upon said cy indrical member, a rotatable shell mounted around said gripping jaws, the said shell on its inner portion being circular atone of its ends and elliptical at the member is placed in engagement with the charging stem of an oil cup. I

3. In combination, a cylindrical member,

the other, the said valve operating member being adapted to'open the said-valve when a valve located in said member intermediate its ends, a perforate member at the lower end of said cylinder, a spring mounted in said member in engagement with said perforate member, a pair of gripping jaws, a rotatable shell located upon said gripping jaws having obliquely extending slots therein, a member extendin through said cylinder and into the slots 1n said shell whereby the said shell is moved longitudinally of the said cylinder, thereby opening the said valve when the gripping aws are placed in position upon the charging stem of an oil cup.

4. Connecting means for oil guns comprising in combination a cylindrical member having a restricted portion intermediate its ends with shouldered portions formed thereon and having a port through said restricted portion, a valve seated upon said restricted portion, a stem secured to said valve, a perforate cup at the forward end of said cylinder connected to said stem, a spring seated upon the said shouldered portion of said cylinder, a pair of gripping jaws concentric with the said cylinder and a rotatably mounted member around said jaws, the said rotatably mounted member being round at ong of its ends and elliptical at the other on 5. Connecting means for oil guns comprising in combination a cylindrical member, a spring pressed valve positioned in said cylindrical member, a perforate plug connected to said valve and positioned in said cylindrical member, a pair of gripping jaws positioned around said cylindrical member and a rotatably mounted shell around said gripping jaws, the said rotatably mounted shell being round on its inner contour at one of its ends and being elliptical on said contour at its opposite ends.

SLiTgned at Chicago, Illinois, this 15th day of ovember, 1922. 1

PETER J. J ORGENSEN. CLARENCE H. J ORGENSEN. 

